/* IDEA Base Design System
 * Shared styles between marketing site and app
 * Based on Ops Portal dark theme
 */

:root {
  /* Colors */
  --bg: #0d1117;
  --bg-card: #161b22;
  --bg-hover: #1c2128;
  --border: #30363d;
  --border-light: #21262d;

  /* Text */
  --text: #e6edf3;
  --text-muted: #8b949e;
  --text-link: #58a6ff;

  /* Status Colors */
  --accent: #58a6ff;
  --success: #3fb950;
  --warning: #d29922;
  --danger: #f85149;
  --info: #58a6ff;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo, monospace;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-md: 16px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 40px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;

  /* Responsive Breakpoints (for reference - actual values used in media queries) */
  /* Mobile: < 768px */
  /* Default/Tablet: 768px - 1440px (primary target - 13" laptops, iPads) */
  /* Large Desktop: > 1440px (4K monitors, ultrawide) */

  /* Layout dimensions */
  --sidebar-width: 240px;
  --sidebar-width-large: 280px;
  --content-max-width: 1200px;
  --content-max-width-large: 1600px;
  --touch-target-min: 44px;
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--space-md);
  color: var(--text-muted);
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  text-decoration: underline;
}

code, pre {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-sm {
  max-width: 800px;
}

.container-lg {
  max-width: 1400px;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: #4c9aed;
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  text-decoration: none;
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-md);
}

/* Status Badges */
.status {
  display: inline-block;
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}

.status.active, .status.success, .status.complete {
  background: rgba(63, 185, 80, 0.15);
  color: var(--success);
}

.status.pending, .status.warning {
  background: rgba(210, 153, 34, 0.15);
  color: var(--warning);
}

.status.error, .status.danger {
  background: rgba(248, 81, 73, 0.15);
  color: var(--danger);
}

.status.info {
  background: rgba(88, 166, 255, 0.15);
  color: var(--info);
}

/* Info Rows (label/value pairs) */
.info-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-light);
}

.info-row:last-child {
  border-bottom: none;
}

.info-label {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.info-value {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

/* Forms */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-md);
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Toggle Switch */
.toggle-switch-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
}

.toggle-label {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition-fast);
}

.toggle-label.active {
  color: var(--accent);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  transition: background-color var(--transition-fast);
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 2px;
  bottom: 2px;
  background-color: var(--muted);
  border-radius: 50%;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--accent);
  border-color: var(--accent);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(24px);
  background-color: white;
}

.toggle-switch input:focus + .toggle-slider {
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.3);
}

/* Task-only fields (hidden when subproject mode) */
.task-only-fields.hidden {
  display: none;
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.hidden { display: none; }

/* ========================================
   RESPONSIVE UTILITIES
   ======================================== */

/* Responsive visibility classes */
.hide-mobile { display: block; }
.hide-tablet { display: block; }
.hide-desktop { display: block; }
.show-mobile { display: none; }
.show-tablet { display: none; }
.show-desktop { display: none; }

/* Mobile: < 768px */
@media (max-width: 767px) {
  .hide-mobile { display: none !important; }
  .show-mobile { display: block !important; }
  .show-mobile-flex { display: flex !important; }
  .show-mobile-inline { display: inline !important; }

  /* Mobile touch targets */
  .btn {
    min-height: var(--touch-target-min);
    padding: var(--space-md) var(--space-lg);
  }

  /* Full-width buttons on mobile */
  .btn-mobile-full {
    width: 100%;
  }

  /* Stack grids on mobile */
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  /* Reduce font sizes slightly on mobile */
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
}

/* Large Desktop: > 1440px */
@media (min-width: 1441px) {
  .hide-desktop { display: none !important; }
  .show-desktop { display: block !important; }
  .show-desktop-flex { display: flex !important; }

  /* Wider containers on large screens */
  .container {
    max-width: var(--content-max-width-large);
  }

  /* More columns on large screens */
  .grid-3-lg { grid-template-columns: repeat(3, 1fr); }
  .grid-4-lg { grid-template-columns: repeat(4, 1fr); }
}